Coated wooden receptacle.



human stares PATENT caries.

GEORGE T. BLOOM, OF MAGNOLIA, NEW JERSEY.

COATED WOODEN RECEPTACLE.

No Drawing.

To all whom it may concern:

Be it known that I, Gnoncn '1. Bloom, a citizen of the United States, residing at Magnolia, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Coated lVooden Receptacles, of which the following is a specification.

My invention relates to a process of. coating or insulating the surface or interior of containers or receptacles, formed of wood, metal or the like, and which are adapted to receive and hold hydrocarbons, such as oil, gasolene and the like.

My process consists generally in applying a suitably concentrated solution of waste sulfite liquor,'or sulfite pitch, of acid reaction, to the interior of the container, and allowing the liquid to preferably partly dry, providing a coherent continuous film coating, of desired character.

It has been found that the coating produced by my process is insoluble in hydrocarbons, such as oil, gasolene or the like. A further advantage obtained in connection with my process is that the coherent coating produced thereby is highly soluble in water, thereby allowing the container to be readily cleaned, by the application of hot water or steam;

I am aware of the fact that it is old in the art to coat the interior of containers formed of wood or the like with-a solution of glue.' This glue coating is not wholly satisfactory, inasmuch as it is soluble in hydrocarbons such as oil, gasolene or the like, producing what is known as foots or sludge. This foots is often very injurious or destructive to the hydrocarbons contained in the receptacle. The glue coating renders it diificult to thoroughly clean the receptacle, since the glue, when dried, is not readily soluble in water or steam. It has also been customary to-employ a coating comprising a solution of glue mixed with other materials, and the container has also been subjected to several coatings.

I am 'lso'aware of the fact that attempts have heretoforev been made to utilize the Specification of Letters Patent.

Patented Jan. 14., 1919.

Application filed December 13, 1916. Serial No. 136,757.

waste sulfite liquor or sulfite pitch, in coating containers, but such attempts, as far as I am aware, have not proven wholly satisfactory, owing to the use of such material of an improper density. Furthermore, it has been customary to mix with such coating material other coating materials which react with it and prevent the formation of a continuous film. It has also been customary to add neutralizing materials to the 'sulfite pitch, and these materials have been mixed with the pitch, or applied thereto after the pitch has been coated upon the surface of the container, or coated upon the container, prior to the application of the sulfite pitch thereto. As far as I am aware, these processes require the coating material to be ap plied while hot.

In the practice of my process, in its preferred form, I employ the waste suliite liquor or suliite pitch in a concentrated form, the same having a density of approximately 1.18 specific gravity. This pitch is also in a slightly acid condition. The sulfite pitch may be applied to the surface of the container, which may be a wooden keg or barrel, by spraying, flowing or brushing the same thereon, or in any other suitable is to be taken as a preferred example of the same, and that various changes may be resorted to in the steps'of the rocess and details of procedure, without eparting from the spirit of the intention or the scope of the subjoined claim.

Having thus described my invention, I claim: 4

5 of a density of approximately 1.18 specific A wooden receptacle having its imier sur- In tcstimon whereof I afiix my signature face coated with a pal tly dried elastic coatin presence 0 two witnesses. 111g, Sald CO iLtlIlg COIlSlSlElIlg entllely 0f (EOII- T centrated waste sulfite liquor or sulfite pitch Witnesses: I gravity and having an acid reaction which J AMES C. G001), is un-neutralized. EDWARD J. GORMLEY. 

